i believe as you do - that vaccines are harmful. rare unsubstantiated information does not automatically make it false, just suspect. its a heads up. its breaking. if further corroboration comes, then we have seen the tip of the iceberg. if it doesnt, its still good policy to never use the stuff. if it helps one person make the right decision, then it is worth it.
its like al gores global warming. i dont believe his science, but his conclusion that we must abandon fossil fuels is right on. thus, i wont argue the point.